<?xml version="1.0" encoding="iso-8859-1"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <title>Qt 4.6: composition.h Example File (demos/composition/composition.h)</title> <link href="classic.css" rel="stylesheet" type="text/css" /> </head> <body> <table border="0" cellpadding="0" cellspacing="0" width="100%"> <tr> <td align="left" valign="top" width="32"><a href="http://qt.nokia.com/"><img src="images/qt-logo.png" align="left" border="0" /></a></td> <td width="1"> </td><td class="postheader" valign="center"><a href="index.html"><font color="#004faf">Home</font></a> · <a href="classes.html"><font color="#004faf">All Classes</font></a> · <a href="functions.html"><font color="#004faf">All Functions</font></a> · <a href="overviews.html"><font color="#004faf">Overviews</font></a></td></tr></table><h1 class="title">composition.h Example File<br /><span class="small-subtitle">demos/composition/composition.h</span> </h1> <pre><span class="comment"> /**************************************************************************** ** ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** ** This file is part of the demonstration applications of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** Commercial Usage ** Licensees holding valid Qt Commercial licenses may use this file in ** accordance with the Qt Commercial License Agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and Nokia. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser ** General Public License version 2.1 as published by the Free Software ** Foundation and appearing in the file LICENSE.LGPL included in the ** packaging of this file. Please review the following information to ** ensure the GNU Lesser General Public License version 2.1 requirements ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. ** ** In addition, as a special exception, Nokia gives you certain additional ** rights. These rights are described in the Nokia Qt LGPL Exception ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU ** General Public License version 3.0 as published by the Free Software ** Foundation and appearing in the file LICENSE.GPL included in the ** packaging of this file. Please review the following information to ** ensure the GNU General Public License version 3.0 requirements will be ** met: http://www.gnu.org/copyleft/gpl.html. ** ** If you have questions regarding the use of this file, please contact ** Nokia at qt-info@nokia.com. ** $QT_END_LICENSE$ ** ****************************************************************************/</span> #ifndef COMPOSITION_H #define COMPOSITION_H #include "arthurwidgets.h" #include <QPainter> #include <QEvent> QT_FORWARD_DECLARE_CLASS(QPushButton) QT_FORWARD_DECLARE_CLASS(QRadioButton) #ifdef QT_OPENGL_SUPPORT #include <QtOpenGL> #endif class CompositionWidget : public QWidget { Q_OBJECT public: CompositionWidget(QWidget *parent); public slots: void nextMode(); private: bool m_cycle_enabled; QRadioButton *rbClear; QRadioButton *rbSource; QRadioButton *rbDest; QRadioButton *rbSourceOver; QRadioButton *rbDestOver; QRadioButton *rbSourceIn; QRadioButton *rbDestIn; QRadioButton *rbSourceOut; QRadioButton *rbDestOut; QRadioButton *rbSourceAtop; QRadioButton *rbDestAtop; QRadioButton *rbXor; QRadioButton *rbPlus; QRadioButton *rbMultiply; QRadioButton *rbScreen; QRadioButton *rbOverlay; QRadioButton *rbDarken; QRadioButton *rbLighten; QRadioButton *rbColorDodge; QRadioButton *rbColorBurn; QRadioButton *rbHardLight; QRadioButton *rbSoftLight; QRadioButton *rbDifference; QRadioButton *rbExclusion; }; class CompositionRenderer : public ArthurFrame { Q_OBJECT enum ObjectType { NoObject, Circle, Rectangle, Image }; Q_PROPERTY(int circleColor READ circleColor WRITE setCircleColor) Q_PROPERTY(int circleAlpha READ circleAlpha WRITE setCircleAlpha) Q_PROPERTY(bool animation READ animationEnabled WRITE setAnimationEnabled) public: CompositionRenderer(QWidget *parent); void paint(QPainter *); void setCirclePos(const QPointF &pos); QSize sizeHint() const { return QSize(500, 400); } bool animationEnabled() const { return m_animation_enabled; } int circleColor() const { return m_circle_hue; } int circleAlpha() const { return m_circle_alpha; } protected: void mousePressEvent(QMouseEvent *); void mouseMoveEvent(QMouseEvent *); void mouseReleaseEvent(QMouseEvent *); void timerEvent(QTimerEvent *); public slots: void setClearMode() { m_composition_mode = QPainter::CompositionMode_Clear; update(); } void setSourceMode() { m_composition_mode = QPainter::CompositionMode_Source; update(); } void setDestMode() { m_composition_mode = QPainter::CompositionMode_Destination; update(); } void setSourceOverMode() { m_composition_mode = QPainter::CompositionMode_SourceOver; update(); } void setDestOverMode() { m_composition_mode = QPainter::CompositionMode_DestinationOver; update(); } void setSourceInMode() { m_composition_mode = QPainter::CompositionMode_SourceIn; update(); } void setDestInMode() { m_composition_mode = QPainter::CompositionMode_DestinationIn; update(); } void setSourceOutMode() { m_composition_mode = QPainter::CompositionMode_SourceOut; update(); } void setDestOutMode() { m_composition_mode = QPainter::CompositionMode_DestinationOut; update(); } void setSourceAtopMode() { m_composition_mode = QPainter::CompositionMode_SourceAtop; update(); } void setDestAtopMode() { m_composition_mode = QPainter::CompositionMode_DestinationAtop; update(); } void setXorMode() { m_composition_mode = QPainter::CompositionMode_Xor; update(); } void setPlusMode() { m_composition_mode = QPainter::CompositionMode_Plus; update(); } void setMultiplyMode() { m_composition_mode = QPainter::CompositionMode_Multiply; update(); } void setScreenMode() { m_composition_mode = QPainter::CompositionMode_Screen; update(); } void setOverlayMode() { m_composition_mode = QPainter::CompositionMode_Overlay; update(); } void setDarkenMode() { m_composition_mode = QPainter::CompositionMode_Darken; update(); } void setLightenMode() { m_composition_mode = QPainter::CompositionMode_Lighten; update(); } void setColorDodgeMode() { m_composition_mode = QPainter::CompositionMode_ColorDodge; update(); } void setColorBurnMode() { m_composition_mode = QPainter::CompositionMode_ColorBurn; update(); } void setHardLightMode() { m_composition_mode = QPainter::CompositionMode_HardLight; update(); } void setSoftLightMode() { m_composition_mode = QPainter::CompositionMode_SoftLight; update(); } void setDifferenceMode() { m_composition_mode = QPainter::CompositionMode_Difference; update(); } void setExclusionMode() { m_composition_mode = QPainter::CompositionMode_Exclusion; update(); } void setCircleAlpha(int alpha) { m_circle_alpha = alpha; update(); } void setCircleColor(int hue) { m_circle_hue = hue; update(); } void setAnimationEnabled(bool enabled); private: void updateCirclePos(); void drawBase(QPainter &p); void drawSource(QPainter &p); QPainter::CompositionMode m_composition_mode; #ifdef Q_WS_QWS QPixmap m_image; QPixmap m_buffer; QPixmap m_base_buffer; #else QImage m_image; QImage m_buffer; QImage m_base_buffer; #endif int m_circle_alpha; int m_circle_hue; QPointF m_circle_pos; QPointF m_offset; ObjectType m_current_object; bool m_animation_enabled; int m_animationTimer; #ifdef QT_OPENGL_SUPPORT QGLPixelBuffer *m_pbuffer; GLuint m_base_tex; GLuint m_compositing_tex; int m_pbuffer_size; <span class="comment">// width==height==size of pbuffer</span> QSize m_previous_size; #endif }; #endif <span class="comment">// COMPOSITION_H</span></pre> <p /><address><hr /><div align="center"> <table width="100%" cellspacing="0" border="0"><tr class="address"> <td width="40%" align="left">Copyright © 2010 Nokia Corporation and/or its subsidiary(-ies)</td> <td width="20%" align="center"><a href="trademarks.html">Trademarks</a></td> <td width="40%" align="right"><div align="right">Qt 4.6.3</div></td> </tr></table></div></address></body> </html>